Mutant rat (Regrets)
Mutant rats (AUDIO: Regrets [+]Loading...["Regrets (audio story)"]) were rats which grew in size after being exposed to extraterristrial chemicals dumped in the Docklands area, forming a new subspecies. (AUDIO: Apex [+]Loading...["Apex (audio story)"]) Docklands was the location of Canary Wharf, (PROSE: The Time Traveller's Almanac [+]Loading...{"chaptname":"Everything Changes","page":"95","chaptnum":"3","1":"The Time Traveller's Almanac (reference book)"}) the location of Torchwood Tower. (TV: Army of Ghosts) As Apex Costa noted, (AUDIO: Apex [+]Loading...["Apex (audio story)"]) a similar case occurred in Sheffield in 2018 when spiders mutated after being exposed to toxic waste. (TV: Arachnids in the UK)